I am new to loading for a glock 20 I just acquired, I have loaded for other cartridges but not the 10. Montana bullets lists .400. .401, .402 as their OD for their 200 grain WFN-PB BHN 22 cast bullets. Can anyone clue me in regards which diamete would work best for the Glock OEM barrel? I am however leaning to the .400 due to case bulge reduction. I have longshot and accurate #9, power pistol , lil gun and blue dot if anyone wants to suggest a load to carry on a hunting lease.
